Please enable JavaScript.
Coggle requires JavaScript to display documents.
Biology Mindmap - Coggle Diagram
Biology Mindmap
-
-
Ecosystem
Consists of:
-
-
-
-
Decomposers- Bacteria and fungi that get their energy from feeding off dead and decaying organisms and undigested waste.
Examples: Rainforests, Tundras
Definition: an ecological system formed by the interaction of living organisms and their non-living environment.
Food Chain
Definition: A food chain shows the transfer of energy from one organism to the next, starting with a producer
-
Ecology
-
Terminologies: Habitat, Population and Community, Biotic and Abiotic .
-
Sigmoid Curve
Phases:
- Lag phase - organisms are adapting to the environment before they are able to reproduce; in addition, at this stage there are very few organisms and so reproduction is not producing larger numbers of offspring
- Log phase (aka exponential phase) - food supply is abundant, birth rate is rapid and death rate is low; growth is exponential and only limited by the number of new individuals that can be produced
3.Stationary phase - population levels out due to a factor in the environment, such as a nutrient, becoming limited as it is not being replenished; birth rate and death rate are equal and will remain so until either the nutrient is replenished or becomes severely limited
- Death phase - population decreases as death rate is now greater than birth rate; this is usually because food supply is short or metabolic wastes produced by the population have built up to toxic levels
-
